> On Jan 29, 2024, at 9:54 AM, William Sudbrink via cctalk
> <cctalk@classiccmp.org> wrote:
> ...the anode cap on the leaking CRT had gone rock hard and there was a small
> "streak" on the back of the CRT that looked like the plastic that it was made
> of had released some sort of oil…
Often times dielectric grease is used around anode caps, and it’s not unusual
to see streaks like this. Usually harmless, but you can clean it up and
replace/freshen it if you replace the hardened rubber cap. Be careful with
such cleaning on the tube, though — depending on the tube, there may be an
external aquadag coating which you won’t want to damage/remove.
—FritzM.
